Ryū-ken (龍拳, Dragon Fist) is Super Saiyan Goku's side special move in Super Smash Flash 2. Super Saiyan Goku transforms into Super Saiyan 3 form and releases a dragon shaped projectile from his fists, resembling Shenron. Also, the player can't attack until after the projectile has left the boundaries, but this was a "bug" that got fixed in the demo v0.8b. In v0.9b, the projectile no longer drags opponents off screen but instead hits opponents multiple times.